Bearings, units and housings -- Ball bearings -- Deep groove ball bearings -- Deep groove ball bearings -- SKF 638/8-2Z

638/8-2Z

Dimensions

d		8	mm
D		16	mm
B		6	mm
d₂	≈	9.65	mm
D₂	≈	14.2	mm
r_1,2	min.	0.2	mm

Abutment dimensions

d_a	min.	9.4	mm
d_a	max.	9.5	mm
D_a	max.	14.6	mm
r_a	max.	0.2	mm

Calculation data

Basic dynamic load rating	C	1.33	kN
Basic static load rating	C₀	0.57	kN
Fatigue load limit	P_u	0.024	kN
Reference speed		90000	r/min
Limiting speed		45000	r/min
Calculation factor	k_r	0.015
Calculation factor	f₀	11

Mass

Mass bearing

0.0043

Model Number: 638/8-2Z
Inner Diameter：8mm Outer Diameter：16mm Width：6mm
Reference speed:45000 r/min Limiting speed:90000 r/min
Type：Bearings, units and housings Ball bearings Deep groove ball bearings Deep groove ball bearings
Details： Deep groove ball bearings
Update date：2026-06-24
Application:safety testing,clean stationery,bag machine,welding equipment,bio-chemical,medical equipment,food safety,powder metallurgy,thin metal materials,DC generators,large agricultural machinery
Similar models:W 638/5-2Z W 638/4-2RS1 W 638/3 R-2RS1 W 638/4-2RZ W 63800-2Z W 63802 R-2Z SAF 22638 T W 638/2.5 R-2Z W 63803-2Z W 63801-2Z
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Model No. Inner Diameter Outer Diameter Width Type

13796
85x150x12 HMSA10 RG
OH 31/950 H
SAFS 23024 KAT x 4.1/4
SY 50 FM

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Hot number： 16006/HR22T2 16x32x7 HMSA10 V 21270 21308 E 24036-2CS5/VT143 34x62x10 HMSA10 V 4985 52212 7412 BM FYTB 3/4 RM NU 222 ECM/C3VL0241 PWKRE 80.2RS SAF 23030 KA x 5.3/16 SI 40 ES-2RS SY 25 FM

Model No.	Inner Diameter	Outer Diameter	Width	Type
13796
85x150x12 HMSA10 RG
OH 31/950 H
SAFS 23024 KAT x 4.1/4
SY 50 FM